#include <iostream>
#include <vector>
#include <set>
using namespace std;

int main() {
    int s, n;
    cin >> s >> n;
    vector<int> list1(s + 1);
    for (int i = 1; i <= s; i++) {
        cin >> list1[i];
    }
    for (int i = 0; i < n; i++) {
        int l, r;
        cin >> l >> r;
        vector<int> list2;
        for (int j = l; j <= r; j++) {
            list2.push_back(list1[j]);
        }
        set<int> set1(list2.begin(), list2.end());
        cout << set1.size() << endl;
    }
    return 0;
}

Traceback (most recent call last):
  File "/usr/lib/python3.8/py_compile.py", line 144, in compile
    code = loader.source_to_code(source_bytes, dfile or file,
  File "<frozen importlib._bootstrap_external>", line 846, in source_to_code
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "a.py", line 4
    using namespace std;
          ^
SyntaxError: invalid syntax

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.8/py_compile.py", line 209, in main
    compile(filename, doraise=True)
  File "/usr/lib/python3.8/py_compile.py", line 150, in compile
    raise py_exc
__main__.PyCompileError:   File "a.py", line 4
    using namespace std;
          ^
SyntaxError: invalid syntax


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/usr/lib/python3.8/py_compile.py", line 218, in <module>
    sys.exit(main())
  File "/usr/lib/python3.8/py_compile.py", line 213, in main
    if quiet < 2:
NameError: name 'quiet' is not defined